stored program control (spc)造句

When stored program controlled ( spc ) technology generalized . some of these . supplementary services were integrated into local exchanges . what allowed users to access services in the quick and transparent way we are already used to . and at the same time , allowed an increase in the operator - company revenues from a wider span of fees
当存储控制程序技术得到普遍适用之后，其中的一些附加的服务融合到了地方的交互系统中，这就方便用户能够获得我们现在早已习惯的快捷、清晰的服务，同时，也使得电话公司能通过从更广的区域收取费用以增加其利润。
It's difficult to find stored program control (spc) in a sentence. 用stored program control (spc)造句挺难的